TM-5-2350-262-20-3
ARMORED COMBAT EARTHMOVER (ACE), M9
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL; VOLUME 3 OF 3; HYDRAULIC TROUBLESHOOTING TEST PROCEDURES
TM-5-2350-262-20-3 - Page 268 of 319
OIL FLOW TEST
NOTE
Have suitable container ready to catch oil.
•
Disconnect HYDR-MAN-IN-9 hose (5) from elbow (6) at port P on track adjuster manifold
(7).
Cap elbow (6).
•
While holding open end of hose (5) in suitable container, have assistant start engine.
Check for free flow of hydraulic oil from hose (5).
•
Stop engine; relieve hydraulic pressure.
Connect hose (5) to elbow (6).
Perform Semi-automatic track adjuster electrical troubleshooting, refer to TM 5-2350-262-20-1.
SPOOL AND POPPET VALVE CHECKS
NOTE
To test spool valve, extend and retract track adjuster cylinders.
To
retract track adjuster cylinders, the poppet valves must be
overridden.
To override the poppet valves (X1 or X2), depress
manual override, rotate 180
o
counter clockwise and release (it will
be up).
•
Have assistant start engine
•
To extend left cylinder, depress manual override spool valve Z3 (1).
•
To extend right cylinder, depress manual override spool valve Z2 (2).
•
To retract left cylinder, override poppet valve X2 (3) and lift manual override spool valve Z3
(1).
•
To retract right cylinder, override poppet valve X1 (4) and lift manual override spool valve Z2
(2).
•
Stop engine; relieve hydraulic pressure.
Refer to TM 5-2350-262-20-2.
4
2
1
3
5
6
Change 1
3-235
TM 5-2350-262-20-3
7
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